Hi honey:
We can't give you medical advice here; you need to take your son to the doctors and come clean about everything he has been on...100 mgs is a large dose of methadone, and it also has a long half life...however, I am NOT a doctor, and no one here can dispense advice on prescription medication.
I assume he is getting the methadone and subuxone from friends? These are powerful medications. Please, I beg you, take your child to a physician and get him the proper help he needs...I'm praying for you, sweetie.
-Robin
What has he been using, heroin? Did he take methadone to try to avoid
Withdrawal?